Which of the following compounds will have zero dipole moment?
(a) cis-1,2-dibromoethylene
(b) 1,1-dibromoethylene
(c) trans-1,2-dibromoethylene
(d) all of these
(a) cis-1,2-dibromoethylene
(b) 1,1-dibromoethylene
(c) trans-1,2-dibromoethylene
(d) all of these